- This exchange:
Donnie: How does it feel to have a wacko for a son?
Rose: It feels wonderful.
- The ending is this completely. The worst part is when they show Frank at the end of the "Mad World" montage just sitting there. Implying that, seeing as the other people in said montage remembered Donnie in some way, he's going to skip Halloween to remember someone he never even knew. To top it off, he tried to warn that person and failed. Now imagine how you would feel in his shoes.
- Donnie lets himself get crushed to death by the airplane, because if he doesn't, the world will end on Halloween night Then, the song "Mad World" starts playing at the credits, and you really start to lose it.
- The part that really got to me (it may have only been in the director's cut) was when Donnie gets into a debate in his English class over Watership Down, asking why the reader should care if the stupid rabbits live or die, and he sounds pretty desperate. He is so clearly trying not to be the Messiah, to convince himself he shouldn't have to die for these foolish, ungrateful people.
- This line from Frank.
I'm so sorry Donnie.
- This makes sense, as he is one of the manipulated dead (long story), and is apologising in advance for killing Gretchen.